
public class Test {
    public static void main(String[] args) {
        //转义字符的使用
        System.out.println("\\\"hello\\\"");
        //强制类型转换
        short a = 128;
        byte b = (byte) a;
        System.out.println(a + " " + b);

        double x = 2.0;
        int y = 4;
        x /= ++y;
        System.out.println(x + " " + y);
    }
}
